Hi so i took my top end of today and the piston in my quad has ART written on the side. is this standard size? just i don't have a measuring thing . here is a picture
thanks man! i originally stripped it to get my new upgrades and frame powder coated but then my grandad decided to tell me my neighbours gran is letting me on their private track so im going to put it back together tomorrow. i still have engine on it but just the top end off as i was checking to see if it was a good piston or not. but il be upgrading it at the end of this year so il be riding for a few months then starting it. just need to get piston ring as there was one missing. also reeds as there broken